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Complete Freewheels BM RINGSPANN
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Complete Freewheels BM RINGSPANN - 1

Complete Freewheels BM for keyway connection on the outer ring with rollers or with sprag lift-off X Application as ➧ Backstop ➧ Overrunning Clutch ➧ Indexing Freewheel Features Complete Freewheels BM are sealed freewheels with ball bearings. They are supplied oil-filled and ready for installation. Besides the standard type, the type with sprag lift-off X is available for wearfree freewheeling operation at high speed rotating inner ring. Nominal torques up to 57 500 Nm. Bores up to 150 mm. A multitude of standardized bore diameters are available with short delivery times. Application example Complete Freewheel BM 60 SX as a backstop, arranged at the end of the intermediate shaft of a spur gearbox. The freewheel is used without the radial seal rings on each side, and is lubricated by the gearbox oil. A radial holding pin engages in the keyway of the outer ring. The backdriving torque is supported by the holding pin in the stationary housing. By removing the radial holding pin, the installation can be turned in both directions in order to carry out maintenance work. With the high shaft speed in normal operation (freewheeling operation), the type with sprag lift-off X is used; the sprags work in freewheeling operation without contact and hence are wear-free.

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Complete Freewheels BM RINGSPANN - 2

Complete Freewheels BM for keyway connection on the outer ring with rollers or with sprag lift-off X Complete Freewheels Upper half: Standard type Lower half: Type with sprag lift-off X Indexing Freewheel Overrunning Clutch Backstop 29-1 Standard type For universal use Type with sprag lift-off X For extended service life using sprags lift-off at high speed rotating inner ring Nominal torque Type MN Nm ■ Freewheels with bore diameters highlighted blue in the table are available with short delivery times. The maximum transmissible torque is 2 times the specified nominal torque. See page 14...

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